convert h264 hd to mpeg2 hd [Archive]

View Full Version : convert h264 hd to mpeg2 hd

fenomeno83

19th January 2007, 17:06

how can I convert h264 hd video in mpeg2 hd video keeping the same quality?

R3Z

20th January 2007, 01:36

Why ?

fenomeno83

20th January 2007, 01:54

because in my system h264 hd videos are much slow (but it is ok with mpeg2 hd videos!).

Pookie

20th January 2007, 05:14

http://www.coreavc.com/

Try that before going through the trouble.

fenomeno83

20th January 2007, 10:07

I used coreavc(the bst for h264) but my system is old,so I want convert h264 hd to mpeg2 hd(accelerated by my video card)

SealTooGreat

22nd January 2007, 13:29

I've had trouble playing 1080p with MPC+ffdshow....I've solved this by switching to mplayer. ;)
Win XP Pro + SP2
Athlon 64 3000+,
1GB of RAM,
GeForce 7300 GS

idbirch2

22nd January 2007, 14:40

I converted the whole Planet Earth series from the BBC-HD broadcasts (H264 MBAFF) to MPEG2 as regardless of decoder used, my PC can't play H264 smoothly and isn't connected to the TV anyway.

I used Canopus ProCoder 2 to do the conversion. Add your source file in Canopus, create a HD MPEG2 target, set the output resolution to the same as the input resolution, choose your bitrates and press Convert.

For 1440x1080 input I used bitrates of:

2 pass VBR
Highest Quality
min: 6000kbps
max: 25000kbps

The results look very nice streamed to my 360 and HDTV.

fenomeno83

22nd January 2007, 19:38

thanks!!!for 1920x1080 input which bitrate do you suggest to me?And 1280x720?thanks

idbirch2

23rd January 2007, 14:23

Depends on the material I suppose, so far I have only done re-encodes of BBC material with resolutions of 1440*1080. The most recent re-encode I did was Pirates of the Caribbean, the settings used were virtually the same as Planet Earth, in fact I lowered them slightly as the Planet Earth settings were a bit OTT I think.

For Pirates, I used an an average bitrate of 17000 and max of 26000. Minimum I think was 5000. The output looked great. This film had black borders which I cropped, if your source completely fills the screen, I guess bitrates might need to be increased.

Best way to decide is to select just a minute or two of your source material in Canopus and do some test encodes, preview the outputs on your own display and go with what you think looks best.